Year	Percent
1996-01-01	34.3304
1997-01-01	31.6968
1998-01-01	34.7640
1999-01-01	28.3437
2000-01-01	31.6872
2001-01-01	29.3438
2002-01-01	27.3278
2003-01-01	37.5477
2004-01-01	35.1023
2005-01-01	40.2998
2006-01-01	33.1063
2007-01-01	30.6827
2008-01-01	32.0335
2009-01-01	27.4858
2010-01-01	24.9367
2011-01-01	24.8607
2012-01-01	24.1551
2013-01-01	24.2742
2014-01-01	25.3828
2015-01-01	29.6553
2016-01-01	25.2893